I saw shaq run the 40 on his "vs" show, and I forget what his time was but it was like 6 seconds or something. Rothlisberger was laughing and making fun of him. He might not have the knees to hold up to an nfl season against guys who do that stuff all year round morning and night.

Shaq couldnt make it in the NFL... stick to the NBA where noone is near his size.. There are some NFL dudes that will light his slow ass up... And its not like he can run over people, he has a very high center of gravity so people can get low and take him down easy.. His only benefit would be short yardage/goalline TE